Fiber alkaline elution device for extracting uranium from seawater

Abstract

The utility model discloses a fiber alkaline elution device for extracting uranium from seawater. The fiber alkaline elution device comprises a rack; the elution box is provided with a first opening; the liquid inlet pipe is communicated with the internal space of the elution box; the liquid discharge pipe is communicated with the bottom of the internal space of the elution box; the box door can seal the first opening; the rotating frame is mounted in the elution box, and the rotating frame is provided with a plurality of mounting positions; the elution cylinder is detachably mounted on the corresponding mounting position, one end of the elution cylinder is provided with a second opening facing the box door, and a plurality of through holes are formed in the cylinder wall of the elution cylinder; the hatch cover is used for sealing the second opening; the driving motor is used for driving the rotating frame to rotate; and the shell is fixed with the rack. According to the device, through rotation of the rotating frame, a plurality of elution cylinders mounted on the rotating frame can be in interactive contact with alkaline eluent efficiently, and the elution cylinders are detachably mounted on the rotating frame, so that fibers can be conveniently placed and taken out, and the working efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial processing equipment, specifically to an alkaline elution device for uranium extraction fibers from seawater. Background Technology

[0002] The ocean contains approximately 4.5 billion tons of uranium resources, a rich reserve that provides a strong potential guarantee for the development of my country's nuclear industry and energy supply. Currently, various countries are actively developing and promoting uranium extraction from seawater. The United States uses active adsorption filtration, which involves manually pumping seawater and collecting uranium ions using an adsorbent. Japan uses membrane filtration, similarly using manually pumped seawater to pass through an adsorption membrane to enrich uranium ions, ultimately obtaining gram-level yellowcake from the seawater. Other countries, such as South Korea and France, have similar approaches to seawater uranium extraction. However, due to the use of active adsorption, the profitability of seawater uranium extraction has consistently remained below the break-even point.

[0003] The fact that profitability falls below the break-even point is the fundamental problem hindering the development of uranium extraction from seawater. Therefore, my country's seawater uranium extraction process employs a combination of passive adsorption and filtration. Simultaneously, the mechanical strength of the adsorption materials is enhanced to allow for multiple reuses, further reducing the overall cost of seawater uranium extraction.

[0004] To achieve the reuse of adsorbent materials, non-destructive or low-loss elution is necessary. Currently, adsorbent elution mainly falls into two categories: acid elution and alkaline elution. Acid elution uses hydrochloric acid as the eluent, offering significant advantages, with elution efficiency approaching 100%. However, acid elution causes considerable structural damage to the adsorbent material, rendering it unusable and a disposable consumable. Alkaline elution effectively mitigates this problem. Alkaline elution uses carbonate-based eluents supplemented with a small amount of hydrogen peroxide. Currently, the adsorbent materials used in my country's seawater uranium extraction are functionalized fibers based on polyacrylonitrile. Exploring the large-scale alkaline elution process parameters for such fiber adsorbents is crucial for advancing my country's seawater uranium extraction work towards engineering feasibility. Therefore, there is an urgent need to develop a highly efficient elution device and supporting facilities to achieve efficient and low-loss elution of uranium extraction fiber materials. Utility Model Content

[0005] This invention addresses the aforementioned problems by proposing an alkaline elution device for uranium extraction fibers from seawater.

[0006] The technical solution adopted by this utility model is as follows:

[0007] An alkaline elution apparatus for uranium extraction fibers from seawater includes:

[0008] frame;

[0009] A horizontal, cylindrical washing and extraction chamber, with a first opening at one end;

[0010] The inlet pipe is connected to the internal space of the elution chamber and is used to inject alkaline eluent into the elution chamber;

[0011] A drain pipe is connected to the bottom of the internal space of the washing and elution tank for draining waste liquid;

[0012] The door is rotatably mounted at the first opening and is capable of sealing the first opening.

[0013] A rotating frame is rotatably mounted inside the washing and desiccant via a rotating shaft, and the rotating frame has multiple mounting positions spaced apart around the rotating shaft.

[0014] The washing cylinder is detachably installed on the corresponding mounting position of the rotating frame. One end of the washing cylinder has a second opening facing the door. The cylinder wall of the washing cylinder is provided with multiple through holes.

[0015] A hatch cover is detachably mounted on the rotating frame, and the hatch cover mates with a second opening to seal the second opening;

[0016] A drive motor is fixed on the frame, and the drive motor is used to drive the rotating shaft of the rotating frame to rotate.

[0017] The outer casing is fixed to the frame.

[0018] The working principle of this application is as follows: The fibers to be cleaned are placed into the washing drum (the fiber volume should not exceed two-thirds of the washing drum space to avoid insufficient penetration of the alkaline eluent due to excessive compactness between the fiber and the washing drum). The cover is rotated and tightened to ensure the fiber is within the space formed by the washing drum and the cover. The chamber door is closed, and a certain amount of alkaline eluent is added through the inlet pipe. The drive motor is activated, driving the rotating frame to rotate. The rotating frame causes the washing drum to rotate around its axis. At this time, the alkaline eluent can contact the fiber through the through-holes in the washing drum, performing the washing operation. After washing is complete, the waste liquid is discharged through the drain pipe. Then, the spin-drying program is started to discharge and collect the eluent again. Finally, the chamber door and cover are opened sequentially to remove the washed fibers from the washing drum.

[0019] The alkaline elution apparatus for seawater uranium extraction fibers in this application enables multiple elution cylinders mounted on the rotating frame to efficiently interact with the alkaline eluent. The detachable installation of the elution cylinders on the rotating frame facilitates the placement and removal of fibers, further improving work efficiency.

[0020] In practical applications, the eluent can be the alkaline eluent used in existing technologies for eluting uranium fibers from seawater. The solid-liquid ratio of the fiber to the eluent is 1:5. After multiple elutions, the elution efficiency of uranyl is approximately 90% or higher.

[0021] In practical applications, after use, the inside of the washing and extraction tank can be rinsed with clean water to prevent sediment or alkaline residue from corroding the equipment.

[0022] In one embodiment of this utility model, the inner diameter of the through hole is 0.3cm to 0.7cm.

[0023] This design of the through-holes facilitates the exchange of eluent while allowing the precipitate generated during elution to flow out smoothly, and effectively prevents fibers from clogging the pores.

[0024] In one embodiment of the present invention, a liquid collection tank fixed on the frame is also included. The liquid collection tank is located directly below the washing tank, and the waste liquid discharged from the drain pipe flows into the liquid collection tank.

[0025] In one embodiment of the present invention, a liquid collection tank fixed on the frame is further included. The liquid collection tank is located directly below the first opening and the bottom wall of the liquid collection tank is higher than the upper end of the liquid collection box. The liquid collection tank has a liquid guide pipe, one end of which is connected to the bottom of the liquid collection tank and the other end is directed toward the liquid collection box.

[0026] Liquid usually flows down when the box door is opened and closed. By setting up a collection tank and a liquid guide pipe, the liquid flowing down from the first opening of the washing box can be finally guided into the collection tank.

[0027] In one embodiment of the present invention, a control unit is further included, which includes a display screen, an instrument panel, and multiple operation buttons fixed on the housing.

[0028] In practical use, there are six operation buttons, such as "fill", "fill", "high speed", "low speed", "forward / reverse", and "emergency stop". Other functions can be selected and operated through the LCD screen.

[0029] In practical applications, the control unit can manually set parameters such as rotation speed, time, and forward / reverse rotation, or it can perform elution according to a preset program.

[0030] In actual use, the bottom of the frame is equipped with casters and caster locking buckles, which facilitates the movement and placement of the washing and dehydration device.

[0031] In practical applications, components such as the frame and cabinet doors that are easily contaminated with alkaline eluents should preferably be made of alkali-resistant stainless steel.

[0032] In practical applications, the drive motor is a three-phase asynchronous motor, which has good speed regulation and high output power per unit weight and volume, making it the best choice for fiber washing and desorption.

[0033] In one embodiment of this utility model, a drive wheel is fixed on the drive motor, and a driven wheel is fixed on the part of the rotating shaft located outside the washing and desiccant. The drive wheel and the driven wheel are connected by a transmission structure.

[0034] In one embodiment of this utility model, the transmission structure is a tooth or a transmission belt.

[0035] In one embodiment of the present invention, the end of the mounting position of the rotating frame has a sealing steel ring, and the hatch cover is rotatably engaged with the sealing steel ring.

[0036] The second opening is opened and closed by rotation. The sealing steel ring is made of alkali-resistant stainless steel and has a waterproof rubber ring installed inside to prevent the eluent from leaking out during the stirring and elution process. The sealing steel ring is fixed to the rotating frame with fasteners.

[0037] In one embodiment of this utility model, the mounting position is a hollowed-out groove-shaped structure, and the washing and extracting cylinder can be inserted into or removed from the mounting position.

[0038] This design allows the washer cartridge to be removed from its mounting position for easy cleaning.

[0039] In one embodiment of the present invention, a cleaning mechanism is further included, the cleaning mechanism comprising:

[0040] Clean water tank;

[0041] The cleaning tube is connected at one end to the cleaning tank and at the other end to the top of the washing and dehydration tank, facing the rotating frame.

[0042] A circulation pump is installed on the cleaning pipe.

[0043] In practical applications, after washing and dehydration, a rapid cleaning mechanism can be used for rinsing. A circulating pump sprays clean water at high speed onto the rotating frame, while dirty water is discharged through a drain pipe. For example, one cleaning method involves the rotating frame rotating while the cleaning pipe continuously sprays clean water onto it.

[0044] The beneficial effects of this utility model are: the alkaline elution device for seawater uranium extraction fiber of this application enables multiple elution cylinders installed on the rotating frame to efficiently interact with the alkaline elution solution through the rotation of the rotating frame. The elution cylinders can be detachably installed on the rotating frame, which facilitates the placement and removal of fibers, further improving work efficiency. Attached Figure Description

[0045] Figure 1This is a schematic diagram of the alkaline elution apparatus for seawater uranium extraction fibers in Example 1;

[0046] Figure 2 This is a schematic diagram of a seawater-based alkaline elution device for uranium extraction fibers, concealed within a shell.

[0047] Figure 3 yes Figure 2 A diagram showing what's behind the hidden box door;

[0048] Figure 4 yes Figure 3 A diagram showing the area behind the concealed hatch;

[0049] Figure 5 This is a schematic diagram from another angle of the alkaline elution device for uranium extraction fibers from seawater, hidden behind the outer shell;

[0050] Figure 6 This is a schematic diagram of the alkaline elution device for seawater uranium extraction fibers after concealing the outer shell in Example 2.

[0051] The labels for the attached figures are as follows:

[0052] 1. Frame; 2. Washing and Extraction Chamber; 21. First Opening; 22. Inlet Pipe; 23. Drain Pipe; 3. Chamber Door; 4. Rotating Frame; 41. Rotating Shaft; 42. Sealing Steel Ring; 43. Chamber Cover; 5. Washing and Extraction Cylinder; 51. Second Opening; 52. Through Hole; 61. Drive Motor; 62. Drive Wheel; 63. Driven Wheel; 7. Outer Shell; 81. Collection Tank; 82. Collection Slot; 83. Guide Pipe; 9. Control Unit; 101. Cleaning Pipe; 102. Circulation Pump. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0054] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] The present invention will now be described in detail with reference to the accompanying drawings.

[0057] Example 1

[0058] like Figures 1-5 As shown, a seawater uranium extraction fiber alkaline elution apparatus includes:

[0059] Rack 1;

[0060] A horizontal cylindrical washing and extraction tank 2, with a first opening 21 at one end;

[0061] The inlet pipe 22 is connected to the internal space of the elution tank 2 and is used to inject alkaline elution solution into the elution tank 2;

[0062] The drain pipe 23 is connected to the bottom of the internal space of the washing and elution tank 2 and is used to drain waste liquid;

[0063] The door 3 is rotatably installed at the first opening 21 and can seal the first opening 21.

[0064] The rotating frame 4 is rotatably mounted inside the washing and desiccant 2 via a rotating shaft 41. The rotating frame 4 has multiple mounting positions spaced apart around the rotating shaft 41 (not shown in the figure).

[0065] The washing and extracting cylinder 5 is detachably installed on the corresponding mounting position of the rotating frame 4. One end of the washing and extracting cylinder 5 has a second opening 51 facing the door 3. Multiple through holes 52 are provided on the cylinder wall of the washing and extracting cylinder 5.

[0066] The hatch cover 43 is detachably mounted on the rotating frame 4. The hatch cover cooperates with the second opening 51 to seal the second opening 51.

[0067] The drive motor 61 is fixed on the frame 1 and is used to drive the rotating shaft 41 of the rotating frame 4 to rotate.

[0068] The outer casing 7 is fixed to the frame 1.

[0069] like Figure 4 As shown, in this embodiment, the inner diameter of the through hole 52 is 0.3cm to 0.7cm.

[0070] The through-hole 52 is designed in this way to facilitate the exchange of eluent while allowing the precipitate generated during the elution process to flow out smoothly, and to effectively prevent fibers from clogging the pores.

[0071] like Figure 5 As shown, in this embodiment, a collection tank 81 fixed on the frame 1 is also included. The collection tank 81 is located directly below the washing tank 2, and the waste liquid discharged from the drain pipe 23 flows into the collection tank 81.

[0072] like Figure 4 and 5 As shown, in this embodiment, a liquid collection tank 82 fixed on the frame 1 is also included. The liquid collection tank 82 is located directly below the first opening 21 and the bottom wall of the liquid collection tank is higher than the upper end of the liquid collection box 81. The liquid collection tank 82 has a liquid guide pipe 83. One end of the liquid guide pipe 83 is connected to the bottom of the liquid collection tank 82, and the other end faces the liquid collection box 81.

[0073] When the box door 3 is opened and closed, liquid usually flows down. By setting up the liquid collection tank 82 and the liquid guide pipe 83, the liquid flowing down from the first opening 21 of the washing box 2 can be finally guided into the liquid collection tank 81.

[0074] like Figure 1 As shown, in this embodiment, a control unit 9 is also included. The control unit 9 includes a display screen, an instrument panel, and multiple operation buttons fixed on the housing 7.

[0075] In practical use, there are six operation buttons, such as "fill", "fill", "high speed", "low speed", "forward / reverse", and "emergency stop". Other functions can be selected and operated through the LCD screen.

[0076] In practical applications, the control unit 9 can manually set parameters such as rotation speed, time, and forward / reverse rotation, or it can perform elution according to a preset program.

[0077] In actual use, the bottom of the frame 1 is equipped with casters and caster locking buckles, which facilitates the movement and placement of the washing and dehydration device.

[0078] In practical applications, components such as the frame 1 and the door 3, which are easily contaminated with alkaline eluent, are preferably made of alkali-resistant stainless steel.

[0079] In practical applications, the drive motor 61 is a three-phase asynchronous motor with good speed regulation and high output power per unit weight and volume, making it the best choice for fiber washing and desorption.

[0080] like Figure 5 As shown, in this embodiment, a drive wheel 62 is fixed on the drive motor 61, and a driven wheel 63 is fixed on the part of the rotating shaft 41 located outside the washing and desiccant 2. The drive wheel 62 and the driven wheel 63 are connected by a transmission structure.

[0081] In practical applications, the transmission structure is either teeth or a transmission belt.

[0082] like Figure 3 and 4 As shown, in this embodiment, the end of the mounting position of the rotating frame 4 has a sealing steel ring 42, and the hatch cover 43 is rotatably engaged with the sealing steel ring 42. The second opening 51 is opened and closed by rotation. The sealing steel ring 42 is made of alkali-resistant stainless steel and has a waterproof rubber ring installed inside to prevent the eluent from seeping out during the stirring and elution process. The sealing steel ring 42 is fixed to the rotating frame 4 by fasteners.

[0083] In this embodiment, the mounting position is a hollowed-out groove-shaped structure, allowing the washing and extracting cylinder 5 to be inserted into or removed from the mounting position.

[0084] This design allows the washer-extractor 5 to be removed from its mounting position for easy cleaning.

[0085] The working principle of this application is as follows: The fibers to be cleaned are placed into the washing cylinder 5 (the fiber volume should not exceed two-thirds of the space in the washing cylinder 5 to avoid insufficient penetration of the alkaline eluent due to excessive compactness between the fiber and the washing cylinder 5). The cover 43 is rotated and tightened to ensure the fiber is within the space formed by the washing cylinder 5 and the cover 43. The chamber door 3 is closed, and a certain amount of alkaline eluent is added through the inlet pipe 22. The drive motor 61 is then activated, driving the rotating frame 4 to rotate. The rotating frame 4 causes the washing cylinder 5 to rotate around the rotating shaft 41. At this time, the alkaline eluent can contact the fiber through the through-hole 52 of the washing cylinder 5, performing the washing operation. After washing is complete, the waste liquid is discharged through the drain pipe 23. Then, the spin-drying program is started to discharge and collect the eluent again. Finally, the chamber door 3 and the cover are opened sequentially to remove the washed fibers from the washing cylinder 5 or to remove the entire washing cylinder 5.

[0086] In practical applications, the eluent can be the alkaline eluent used in existing technologies for eluting uranium fibers from seawater. The solid-liquid ratio of the fiber to the eluent is 1:5. After multiple elutions, the elution efficiency of uranyl is approximately 90% or higher.

[0087] In practical applications, after use, the inside of the washing and extraction tank 2 can be rinsed with clean water to prevent sediment or alkaline residue from corroding the equipment.

[0088] The alkaline elution apparatus for seawater uranium extraction fibers in this application enables multiple elution cylinders 5 mounted on the rotating frame 4 to efficiently interact with the alkaline eluent through rotation. The elution cylinders 5 are detachably mounted on the rotating frame 4, facilitating the placement and removal of fibers and further improving work efficiency.

[0089] Example 2

[0090] The difference between this embodiment and embodiment 1 is that it also includes a cleaning mechanism. For example... Figure 6 As shown, the cleaning mechanism includes:

[0091] Clean water tank (not shown in the diagram);

[0092] The cleaning tube 101 is connected at one end to the cleaning tank and at the other end to the top of the washing and desiccation tank 2 and faces the rotating frame 4.

[0093] The circulating pump 102 is installed on the cleaning pipe 101.

[0094] In practical applications, after washing and dehydration, a rapid cleaning process can be performed using a cleaning mechanism. A circulating pump 102 sprays clean water at high speed onto the rotating frame 4, while dirty water is discharged through the drain pipe 23. For example, one cleaning method involves the rotating frame 4 rotating while the cleaning pipe 101 continuously sprays clean water into it.

[0095] The above description is only a preferred embodiment of the present utility model and does not limit the scope of patent protection of the present utility model. Any equivalent structural transformations made based on the content of the present utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present utility model.

Claims

1. A seawater uranium extraction fiber alkaline elution device, characterized in that, include: frame; A horizontal, cylindrical washing and extraction chamber, with a first opening at one end; The inlet pipe is connected to the internal space of the elution chamber and is used to inject alkaline eluent into the elution chamber; A drain pipe is connected to the bottom of the internal space of the washing and elution tank for draining waste liquid; The door is rotatably mounted at the first opening and is capable of sealing the first opening. A rotating frame is rotatably mounted inside the washing and desiccant via a rotating shaft, and the rotating frame has multiple mounting positions spaced apart around the rotating shaft. The washing cylinder is detachably installed on the corresponding mounting position of the rotating frame. One end of the washing cylinder has a second opening facing the door. The cylinder wall of the washing cylinder is provided with multiple through holes. A hatch cover is detachably mounted on the rotating frame, and the hatch cover mates with a second opening to seal the second opening; A drive motor is fixed on the frame, and the drive motor is used to drive the rotating shaft of the rotating frame to rotate. The outer casing is fixed to the frame.

2. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, The inner diameter of the through hole is 0.3cm to 0.7cm.

3. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, It also includes a collection tank fixed on the frame, which is located directly below the washing tank, and the waste liquid discharged from the drain pipe flows into the collection tank.

4. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 3, characterized in that, It also includes a liquid collection tank fixed on the frame, the liquid collection tank being located directly below the first opening and the bottom wall of the liquid collection tank being higher than the top of the liquid collection box. The liquid collection tank has a liquid guide pipe, one end of which is connected to the bottom of the liquid collection tank and the other end of which faces the liquid collection box.

5. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, It also includes a control unit, which includes a display screen, an instrument panel, and multiple operation buttons fixed to the housing.

6. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, A drive wheel is fixed on the drive motor, and a driven wheel is fixed on the part of the rotating shaft located outside the washing and dehydration tank. The drive wheel and the driven wheel are connected by a transmission structure.

7. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 6, characterized in that, The transmission structure is either a toothed gear or a transmission belt.

8. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, The mounting position of the rotating frame has a sealing steel ring at its end, and the hatch cover is rotatably engaged with the sealing steel ring.

9. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, The mounting position is a hollowed-out groove-shaped structure, and the washing and extracting cylinder can be inserted into or removed from the mounting position.

10. The alkaline elution apparatus for seawater uranium extraction fibers as described in claim 1, characterized in that, It also includes a cleaning mechanism, which comprises: Clean water tank; The cleaning tube is connected at one end to the cleaning tank and at the other end to the top of the washing and dehydration tank, facing the rotating frame. A circulation pump is installed on the cleaning pipe.

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